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2. The band gap of a silicon solar cell is 1.1 eV. If the incident light has an intensity of 2 mW and a

2. The band gap of a silicon solar cell is 1.1 eV. If the incident light has an intensity of 2 mW and a wavelength of 640 nm, (a) determine the wavelength and frequency of the incident light of which the photons have just enough energy to overcome the band gap. (b) Calculate the maximum power that this cell can generate. (10 points)

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